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stiffness
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Image
Published: 01 August 2012
Fig. 9.10 (a) Test setup for determining dynamic stiffness; (b) dynamic stiffness measurement for a 500-ton press. Recreated after Ref 9.17
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Image
Published: 01 March 2006
Fig. A.28 Influence of density on and strength and stiffness of polyethylene. Source: Ref A.35
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Image
Published: 01 November 2010
Fig. 9.4 Strength and stiffness of various core materials. Source: Ref 1
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Image
Published: 01 August 2012
Fig. 5.2 Specific strength and specific stiffness comparison of various metals. Source: Ref 5.1
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Image
in Obstacles to High-Temperature Structural Durability of Continuous-Fiber Metal-Matrix Composites
> Fatigue and Durability of Metals at High Temperatures
Published: 01 July 2009
Fig. 9.1 Inverse correlation of stiffness and thermal expansion. Source: Data from Appendix A in Ref 9.1
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Image
Published: 30 November 2013
Fig. 4 Relationship of stiffness, or modulus of elasticity, to temperature for four common alloy systems
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Image
Published: 01 June 1983
Figure 1.14 Schematic regular behavior of an elastic-stiffness constant vs. temperature.
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Image
Published: 01 June 1983
Figure 1.19 Reduced elastic-stiffness constant C / C (0) vs. reduced temperature T / θ E for various s / C (0) ratios according to Varshni’s relationship. θ / E denotes Einstein characteristic temperature.
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Image
Published: 01 August 2005
Fig. 8.7 Correlation of composite stiffness by the rule of mixtures. Source: Ref 8.2
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Image
Published: 01 August 2005
Fig. 8.9 Off-axis stiffness constants as functions of rotation angle θ. Source: Ref 8.3
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Image
Published: 01 August 2012
Fig. 9.7 Effect of press stiffness on contact time. (a) Stiffer press. (b) Less stiff press. As the load builds and the press deflects elastically, a stiffer press requires less time, t p1 , for pressure buildup and also less time, t p2 , for pressure release. Consequently, the total
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Image
Published: 01 August 2012
Fig. 10.15 Vertical stiffness ( C ) of one-point (1p Mech), two-point (2p Mech), and four-point (4p Mech) mechanical presses, bottom knuckle joint (KJ bottom) drives, and top-knuckle joint (KJ top) drives. Source: Ref 10.21
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Image
Published: 01 August 2012
Fig. 10.16 Angular stiffness ( C θ ) of one-point (1p Mech), two-point (2p Mech), and four-point (4p Mech) mechanical presses, bottom knuckle joint (KJ bottom) drives, and top-knuckle joint (KJ top) drives. Source: Ref 10.21
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Image
in Presses and Hammers for Cold and Hot Forging
> Cold and Hot Forging: Fundamentals and Applications
Published: 01 February 2005
Fig. 11.15 Effect of press stiffness on contact time under pressure (S th = theoretical displacement-time curve under load). (a) Stiffer press. (b) Less stiff press. [ Kienzle, 1959 ]
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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870001
EISBN: 978-1-62708-314-0
..., and orthotropic materials, the orientation of plies in unidirectional (lamina) and quasi-isotropic (laminate) lay-ups, and the dominant role of fibers in determining strength, stiffness, and other lamina properties. The chapter also compares the engineering attributes of composites with those of metals...
Abstract
This chapter covers the basic aspects of composite materials. It describes the arrangement, form, and function of their constituent materials and explains how they perform better in combination than on their own. It discusses the directional nature of isotropic, anisotropic, and orthotropic materials, the orientation of plies in unidirectional (lamina) and quasi-isotropic (laminate) lay-ups, and the dominant role of fibers in determining strength, stiffness, and other lamina properties. The chapter also compares the engineering attributes of composites with those of metals and includes application examples.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870285
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses the effect of fiber length and orientation on the strength and stiffness of discontinuous-fiber composites. It also describes several fabrication processes, including spray-up, compression molding, reaction injection molding, and injection molding...
Series: ASM Technical Books
Publisher: ASM International
Published: 15 June 2021
DOI: 10.31399/asm.tb.mpktmse.t56010019
EISBN: 978-1-62708-384-3
... force, sample lengthening, and machine stiffness, and with mechanical properties and parameters such as elastic modulus, Young’s modulus, strength coefficient, strain-hardening exponent, and modulus of resilience. They also cover a wide range of materials including various grades of aluminum and steel...
Abstract
This appendix provides readers with worked solutions to 25 problems involving calculations associated with tensile testing and the determination of mechanical properties and variables. The problems deal with engineering factors and considerations such as stress and strain, loading force, sample lengthening, and machine stiffness, and with mechanical properties and parameters such as elastic modulus, Young’s modulus, strength coefficient, strain-hardening exponent, and modulus of resilience. They also cover a wide range of materials including various grades of aluminum and steel as well as iron, titanium, brass, and copper alloys.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060065
EISBN: 978-1-62708-355-3
... of the machine stiffness on the test results is also described, along with a general assessment of test accuracy, precision, and repeatability of modern equipment. The chapter discusses various types of testing machines and their operations. Emphasis is placed on strain-sensing equipment. The chapter briefly...
Abstract
This chapter reviews the current technology and examines force application systems, force measurement, strain measurement, important instrument considerations, gripping of test specimens, test diagnostics, and the use of computers for gathering and reducing data. The influence of the machine stiffness on the test results is also described, along with a general assessment of test accuracy, precision, and repeatability of modern equipment. The chapter discusses various types of testing machines and their operations. Emphasis is placed on strain-sensing equipment. The chapter briefly describes load condition factors, such as strain rate, machine rigidity, and various testing modes by load control, speed control, strain control, and strain-rate control. It provides a description of environmental chambers for testing and discusses the processes involved in the force verification of universal testing machines. Specimen geometries and standard tensile tests are also described.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060091
EISBN: 978-1-62708-355-3
... environments. The chapter then briefly describes design criteria for some basic property combinations such as strength, weight, and costs as well as stiffness in tension. Additionally, it describes the processes involved in mechanical testing for stress at failure and elastic modulus. Finally, the chapter...
Abstract
This chapter introduces the basic concepts of mechanical design and its general relation with the properties derived from tensile testing. It begins with a description of the basic objective of product design. Next, a simple tie bar is used to illustrate the application of mechanical property data to material selection and design and to highlight the general implications for mechanical testing. Material subjected to the basic stress conditions is considered to establish design approaches and mechanical test methods, first in static loading and then in dynamic loading and aggressive environments. The chapter then briefly describes design criteria for some basic property combinations such as strength, weight, and costs as well as stiffness in tension. Additionally, it describes the processes involved in mechanical testing for stress at failure and elastic modulus. Finally, the chapter examines the correlation between hardness and strength.
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